Rotary engine.



D. N. GREEN. ROTARY ENGINE. APPLICATION FILED AUG. 28, 1909.

Patented Feb. 28, 1911.

2 SHBETS-SHEET 1.

WITNESSES Arm/mm D'. vN. GREEN. ROTARY ENGINE. APPLICATION FILED AUG.28, 1909.

Patented Feb. 28, 1911.

ATTORNEYS which the folloivingis a specification.

' propelling which may be pointed out in the appended claims.

'State of Ohio, have invented certain new'and which are known as rotaryengines, and vit consists in the combinations, constructions h loweringthe panying drawings in whichspring; arm for actuating the abutmentvalve.

2, it will be seen that sragi s grnnr OFFICE.

DAVID NEWTON GREEN,

games.

To all whom .fit may concern: it'known that I, DAVID Nnwroiv GREEN, j acitizenofthe United States, anda resident of'Sunbury,,in the county ofDelaware and i useful Improvements in Rotary Engines, of My ln-ventionrelates to improvements in engines,- more partlcularly those engines andarrangements 3 herein described and claimed. An object of my .inventionis to providea device with novel means for delivering the steam,compressed-air, water or any other suitable medium.

Afurther object of my invention is to provide a novel-form of means forraising and abutment valve in order that the rotating power wheel withits shoe may pass underneath it.

Other objects and advantages will in thefollowing features of theappear, specification and the novel device will be particularly Myinventionis illustrated in the accomt ROTARY ENGINE.

Specification of Letters Patent. Application filed August 28, 1909.

lgure 1 1s a central vertical sect-ion through the device, the powerwheel being shown in side elevation; Fig. 2 is a central verticalsection atright angles to Fig. 1; Fig. 3 is a side view of one of thefly wheels, the shaft, and engaging cam member; Fig. 4 isa plan view ofthe oscillating abutment valve; Fig. 5 is a section along the line 55 ofFig. 1, and Fig. 6 is a detail view of the.

Referring now more particularlyto Fig. the main frame of the engine iscomposed of two opposed parts A and B of a substantially cylindricalshape. These parts are provided with the peripheral flanges a and. bwhich are placed in contact and are secured together by means of boltsor screws C, see Fig. 1. Each of the parts A and B has an annular recess51 and 72 respectively and a central recess ,n and 1) extending inwardlyfrom the exterior as clearly shown in Fig. 2. The frame or casingformed. of. the two opposed members A and B is supported upon anareshaped base D which is provided with a or SUNBURY, 01110.

Patented Feb. Serial No. 515,043.

cont-acting flanges a and b of the lower part of the casing in key Z.Referring now to the member A, it will be seen that the annular channela is pro- :vided with tworings M and P, the latter being provided withmember B is provided rings Q and S.'the latter having the packing ring8. The power wheel L is contact with the rings P and side thereof. Therings are a lateral direction by means ing screws 1' which bear on t Mand Q. as shown in Fig. 2.

The oscillating abutment valve is illustra 'P' J in Figs. 1, 4 and L-.haped member V having at its rear end two projections u and 1' arrangedto straddie the flanges 11 and I) of the members A and 13 as clearlyshown in Fig. 5. The exwith a similar set of I S on either of theadjusthe outer rings tension 1 is threaded to receive the end of 85 apipe n!- tln-ou-gh which the motive fluid is conveyed. A pivot pin 'l.passes through the flanges a and I) and is securely held by means of theset screw 2. One end of this pivot pin forms a l awhile the other endforms a bearing for the extension 0 as shown in Fig. A channel I- leadsfrom the pipe 112-, see Figs. 4 and 1. down to the lower end of thevalve V. The lower end of the valve V abutmentagainst which the steam orother motive flu id presses in forringthe wheel or rotary piston Laround. On the bottom of the abutment valve is a wear-resisting shoe '1'which in and which is designed to protectthe valve itself. Theoscillating abutment valve is arranged to project into an opening in thetopot' the casing Aland B so as to deliver the motive fluid to The freeendo'f the oscillating valve V is arranged to swing down into contactwith a bearing plate W which is provided with acentral groove (Zarranged to receive the and F respec- 6O rnily secured to the shaft bymeans of the a packing p. The 7( v in close adjustable in It consists ofan 30 raring for the extension t'orms the ay be replaced when worn theinner chamber 0.105

may be turned so as to bring the abutting up any wear.

Y and B while an inwardly projecting arm 'n ried down through thechannel a and out the arm; The two arms y and y are conat the sides asshown in'Figs. 1 and 2. The

resilient backing to. From an inspection of Fig. 5 it will be seen thatthe pivot pm T edge of the valve V nearer or farther away from thebearing plate in order to take The power wheel or rotating pisto'n'.L isprovided with a shoe J which is preferably of resilient material and isarranged'to be clamped to a. spring member Nsecured to the periphery ofthe wheel L. The end of the spring member is provided with a portion itadapted to 'bear against the shell A serves for the purpose of attachingtheshoe J. The latter is adapted to project into a recess 7' in theperiphery of the wheel.

The means for raising the oscillating valve is shown in-Figs. 2 and 4.It consists of a crank :22 of the shape shown in these figures which ispivotally mounted on anextension X of the member B. One end of the crankprojects through the portion '0- of the valve V' while the other end issecured 'to anarm y'of a tw0-part .cam Y. The other portion of the cammember is provided with a slot 3 into which one-end of the arm 3projects, the end of the crank :22 being disposed in the alined openingsin the members Y and,y As stated before the member 3 is securelyfastened to the member m but the member 3 is loosely connected with thecrank thereby permitting, the movement of the latter with respect tonected by means of a spring y, the laterally extending portion 1 of thearm y being held in normal engagement with the memher 1 as clearly showninFig. 6. The member y is provided with a cam roller y which is disposedin a groove 7.: in the side of the This groove is of a shape shown inFig. 3 and has on its inner edge a cam surface L over which the roller 3rides thereby causing the lifting of the latter. and consequently thecam Y. The shifting of; the cam Y causes the rotation of the crank :27and consequently a swinging of the oscillating valve about its pivots'1. thus raising the abutment valve whenever the cam roller rides overthe cam surface k From the foregoing description of the vari: ous partsof the device the operation thereof may be readily nhderstood. Thesteam, compressed-air or other fluid motive power is supplied throughthe pipe 112- and is carat the opening '0 The fluid fills the space 0and presses on the shoe J thereby driving the wheel around in thedirection indicated by the arrows. The exhaust gases are driven by theshoe up through lhe opening Z underneath the oscillating valve and outgroove in the wheel K is so arranged that the cam roller ;1 is actuatedjust before the shoe J is about to engage the valve V thereby raisingthe valve and thus doin away with the loss of energy which woul resultfrom the impact of the shoe against the valve. As soon as the shoe haspassed, the" cam roller falls back into its normal posi- 'tion nearerthe center of the shaft thereby stated before are made adjustable so asto bring them into close if desired. It will be observed that when thecam contact with the wheel arm has brought the abutment valve down incontact with the power wheel the upper member 1 stops, while the lowerpart, owing to the shape of the groov 70 goes lower, thereby putting atension on the spring. This insures a good contact between the abutmentvalve and the power wheel. Now,

when the cam roller raises the member 7 the latter engages the lateralportion 3 7 of the upper member'g thereby raising the latter and theabutment valve.

I claim:

1. In a rotary engine, a casing comprising two hollow members securedtogether at their outer edges and provided with interior annularchannels, bearing rings secured in' said channels, a power wheel mountedwithin said casing and arranged to contact with certaln of said rings,fan abutment valve provided with a pair of extensions arranged tostraddle the upper edges of the casing members, a pivot pin carried bythe casing and arranged to extend into said. extensions, one of saidextensions being hollow to deliver motive fiuid to said abutment valve,and means for-adjusting the position of the bearing rings with respectto the power wheel.

2. In a rotary engine, a fly wheel provided with a groove, a pivotedabutment valve provided withan interior channel for delivering motivefluid, a crank connected With said abutment valveon one end and bearinga twopart cam member at the other,

a spring for holding the parts of the cam in normal engagement with eachother, and

a cam roller carried by one of said parts I and arranged to travel inthe groove in sa d fly wheel.

v3. In a rotary; engine, a casing comprising two hollow members securedtogether at their outer edges, apower wheel mounted vided with a pair ofextensions arranged to straddle the upper edges of the casing members, apivot pin carried by said casing,

l l O.

' within said casing, an abutment valve prosaid pivot pin having;reduced cylindrical end portions eccentric of the main portion, arrangedto pivotally engage the extensions of the abutment valve, and means forsecuring the pivot pin in adjusted positions.

4. In a rotary engine, a casing comprising two hollow mem rs securedtogether at their outer edges, a power wheel mounted within said casinga hollow abutment valve provided with a pair of extensions arranged- ,tostraddle'the upper edges of the casing members, one of said extensionshaving a channel for the delivery of motive fluid into the interior ofsaid hollow abutment valve, a pivot pin carried by said casing andhaving reduced cylindrical ends eccentric of the main portion of thepin, arranged to pivotall engage said extensions, a set-screw 'carried ysaid casing and adapted to retain 1 the pivot pin in its shiftedpositions and a j removable bearing plate arranged to be engaged by saidabutment valve.

5. In a rotary engine, a casing provided with an opening, an abutmentvalve carried by said casing having a passage for the pur pose ofdelivering motive fluid to the interior of the casing, one end ofsaid.abut- Inent valve having .a pair of extensions, and

a pivot pin secured to said casing and having-its ends passing intoeach'of said extensions for pivoting the valve one of said extensionshaving a lateral passage in line with said pivot pin and communicatingwith'the fluid delivering passage in the in-- terio'r of the valve. 1

'= ,l DAVID NEWTON GREEN.

Witnesses FRED KEMPTON, ELMER Pnossnn.

